Cableizer ®

Diameter soil layer

Outer diameter of soil layer providing a thermal resistance equivalent to $h_{soil}$.

Symbol
$D_{soil}$
Unit
m
Formulas
$D_{ext} e^{\frac{2k_{4}}{D_{ext} h_{soil}}}$
Related
$D_{ext}$
Diameter external [m]
$h_{soil}$
Heat transfer coefficient wall—soil [W/(K.m$^2$)]
$k_{4}$
Thermal conductivity soil [W/(m.K)]
Used in
$e_{soil}$
Thickness soil layer [m]
$h_{amb}$
Pseudo film coefficient of ambient fluid at ground level [W/(K.m$^2$)]